Coiling machine



www, R8, wm. Mmmm J. F. OCONNOW ,COILING MACHINE Fild Feb. 23. .1921 3Sbwwr-Shwv. 1

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j?? By/g Patented Nov. i6, i924.

JOI-IN 3?. OCONNOR, OF CHCAGO, ILLQNOIS, ASSIGNOR, BY MESNE ASSIGNMENTS,TO W. H. MINER, NC., A CORPORATION F DELAWARE.

COILING MACHINE.

Application filed. February 23, 1921. Serial No. 447,149.

To all u1/wm t may concer/n.'

Be it known that I, JOHN F. OCoNNoR, a citizen cf the United States,residing at Chicago, in the county of @ook and State of illinois, haveinvented a certain new and useful improvement in Coiling Machines, ofwhich the following is a full, clear, concise, and exact description,reference being had to the accompanying drawings, forming a part of thisspecification.

rlhis invention relates to improvements in coiling machines.

One object of the invention is to provide an eiiicient, heavy dutymachine, adapted for the coiling 0f rods or bars and more especiallyadapted for the coiling of rods or bars into high capacity springs suchas are used in shock absorbing mechanisms of railway draft riggings.

A more specific object of the invention is to provide a coiling machineof the general character above indicated wherein provision is made foradjustment for diiferent pitch, different diameter coils, and differentdiameter Amaterials used. 1

Une specific object of the invention is to provide a novel guide toinsureproper deflection and bending of the rod or bar mate rial duringthe coiling process as it passes Abetween certain of the bending rollersand to prevent possible jamming of the material especially when thefront end of the rod or bar passes from one roller to another.

Other objects of the invention will more "clearly appear from the`description and claims hereinafter following.

In the drawings forming a part of this specification, Figure l is a sideelevational view of a coiling machine embodying my improvements. Fig. 2is an end view of the machine illustrated in Fig. l and illustratingalso a partially coiled rod. Fig. 3 is a sectional view correspondingsubstantially to the section line 3-3 of Fig. 2. Fig. Ll is a plan viewof one of the coiling or bending rollers showing more particularly themeans for positively rotating the same.

VFig. 5 is a sectional view corresponding substantially to the sectionline 5-5 of Fig. 2. Figure 6 is a vertical, sectional view correspondingsubstantially to the section line 6*-6 of Fig. l. Fig. 7 is an enlargeddetail sectional view taken in a general transverse direction of themandrel in substantially a plane coinciding with the pitch of the coilbeing formed and illustrating more particularly my improved guide. Fig.8 is a perspective view of the improved guide detached. And Fig. 9 is asectional View corresponding substantially to the section line 9e-9 ofFig. 7.

in said drawings, the machine is shown as provided with a suitablestandard or frame l0 having vertically extending spaced sections10a-l0FL between which is located a driving pulley ll keyed or otherwiserigidly secured to a combined driving shaft and mandrel l2.J the latterextending horizontally and, at its righthand end as viewed in Figure l,providing a cylindrical mandrel proper 13 of any desired length.Mandrels of different diameter may be employed as indicated for instanceby the dotted lines 13a in F ig. 3, my invention contemplatinginterchangeable mandrels in which the shaft portion proper l2 may bealways of the same diameter and readily removable from the drivingpulley and gearing hereinafter described.

@n the outer side of the frame l0, the combined mandrel and shaft 12-18has keyed or otherwise rigidly secured thereto a driving gear 14 adaptedto mesh with pair of diametrically disposed idlers 15 and 16. Each ofsaid idlers is specially journaled on a bracket 17 having a collar 17'LLwhich takes over the mandrel and is adapted to be oscillated withrespect to the latter to provide for adjustment. Flach bracket is formedwith an offset 17b having an elongated arcuate slot 16 thereinconcentric with the axis of the mandrel and through which is extended asecuring bolt 19 threaded into the frame of the machine so that thebracket 17 with its opening 16 or l5 may beheld in any adjusted positioncircumferentially with respect to the mandrel within the limits conntemplated.

In carrying out my invention, I use two bending or coiling rollers 20and 2l in addition to the combined guiding and bending roller 22supported on the standard 23 as seen in Fig. 2. inasmuch as each of saidadditional coiling or bending rollers 20 and 2l is of the same form andsimilarly operated, it will only be necessary to detail the formed atthe top of a hollow cylindrical heavy spindle 26. lntegrally lorotherwise rigidly united with the trunnion 25 is a bevel or spur gear 27meshing with a second bevel gear 28 of larger diameter, the latter beingrotatably mounted about a bushing 29 formed integral with a heavy plate3() adjustably slidably mounted on a heavy supporting bracket 31, thelatter being adjustn ably slidably mounted en the frame 10, ashereinafter described.

The vbevel gear 28, on the side opposite the bevel gear 27, meshes withanother bevel or spur gear 32 carried by the end of a stud shaft 33rotatably mounted in a suitable bearing 34 carried by the slidable plate30. At its opposite end, the stud shaft 33 is formed with a gear 35meshing, in this instance with the idler 15. lTith this train of gearingas best seen in Fig. 6, it will be evident that, if the mandrel wererotated in a Ycounter-clockwise direction, as shown by the arrow thespur gear 32 will be rotated also in a counter-clockwise direction asindicated by the arrow g/ which, through the intermediary of the bevelgears 2S and 27 will effect positive rotation of the roller 20, in 'a`clockwise direction. Similarly, the roller .21 Will be given aclockwise rotation by means of the train of gearing associated with it.

Each bracket 31, is slidably adjustably mounted on the frame 10 so as tomove in a radial'direction with respect to the mandrel,V vthisadjustment being effected by means of elongated slots 3G-36, clampingbolts 37 and adjusting bolt 38. As .will be evident from an inspect-ionof Figure 2, the two brackets 31 are spaced from each'other.circumferentially around the mandrel so as to move in linescoinciding substantially with two radii of the mandrel having anincluded angle Iof approximately 750 to o therebetween. With thisarrangeiment, it 'isevident that each of the rollers 2O and 21 isradially adjustable with respectto 'the .mandrel to thereby adapt therollers for working` on rods of different diameters and for. coils ofdifferent diameters.

Eachof the slide plates 30 is adjustable with respect to its respectivebracket 31 and in `lines parallel to the axis of the mandrel, as forinstance by means of the slots 39 and clamping bolts 40. Each plate 30is formed with opposed undercut grooves as indicated at 41-'41 withinwhich are received the edges of the bracket 31 to hold the plate 30 inassembled relation with the bracket and also to facilitate relativeadjustment.

By referring to Figs. 3 and 5, it will be seen'that the spindle 26 hassecured thereto at yits lbottom end beneath the plate 30, a sleeve 42which is provided with a radially extending flange-like arm 43, thelatter having :an elongated slot 44 .therein through which extends a.clamping` bolt 45 threaded into the plate 30. The spindle 26 and sleeve42 are held rigidly together by any suitable means such as the set screw46. `With this arrangen'ient, it is obvious that I am enabled to adjusteach roller` 2() and 21 angularly about an axis coinciding with a radiusfrom the mandrel which radius extends per pendicnlarly to and intersectsthe axis of rotation of the respective roller and which also is parallelto the line of adjustment of the respective brackets 31 relatively tothe mandrel.

From the preceding description, it will be seen that each of the rollers20 and 21 is positively driven in synchronism with the mandrel andpreferably with a peripheral speed corresponding to the differencebetween the peripheral speed of the surface of the mandrel and theoutside surface speed of the rod or bar 47 heilig coiled. Also, eachroller 2O and 21 is adjustableradially and axially with respect to themandrel, as hereinbefore described. lVith this construction, I amenabled to always bring the grooves 2Oa and 21a of the rollers 2() and21 respectively strictly tangent to the coil being formed regardless ofthe pitch or diameter of the coil or diameter of the rod formingthe coiland thereby obtain accurate bending and ceiling of the rods and truehelices without deformation of thc material.

Heretofore, considerable diliiculty has been experienced in feeding thefront-end of the rod or bar through the bending rollers in starting therst turn of the helix. Due to the necessity of having the rollersrelatively close and of substantial and'compraratively large form whenworking .upon heavy material, it is not feasible to provide a guide ordeflector between the rollers and at `the same time have said guide ordeflector rigid ly supported from the frame. To overcome the diliicultymentioned, I `have'provrded a novel guide designated generally'by thereference A. Said guide is in the form .of a block which, at its inneror operative end, is provided with a curved groove as indicated at 48corresponding substantially to vthe helix of the coil being formed butwhich groove 48 nevertheless is sufficiently deepened so as to leave aclearance between it and the exterior periphery of the coil as indicatedat 49 in Fig. 7. With this arrangei ment, the guide prevents the forwardend of the rod from becoming jammed between the two rollers 2O and`21and yet does not interfere with or frictionally retard the advance ofthe rod during the subsequent coiling thereof. The block A is made toconform substantially to the passage defined between the two rollers 20and 21 inalinement with the grooves thereof so that the guide block hasa surface 5() on l'each side Which is convex in cross section asindicated in Figure 9 and at the same time curved to coliform to theperiphery of the groove of the roller. As clearly shown in Figure 9, aslight amount of play or clearance as indicated at 5l is left betweenthe guide block and the rollers so as to prevent binding While at thesame time insuring the proper support and maintenance of the guide blockin position by the rollers themselves Without the aid of any independentsupports secured to the frame of the machine.

I have herein shown and described what I now consider the preferredmanner of carrying out the invention but the same is merely illustrativeand I contemplate all changes and modilications that come within thescope of the claims appended hereto.

I claim:

l. In a coiling machine having a suitable frame, the combination With amandrel; of a plurality of bending rollers disposed circumferentiallyaround the mandrel; and in` dependent means for adjusting each roller 1longitudinally of the axis of said mandrel,

said vmeans comprising a support and a roller carrying slide movablymounted upon the support.

2. In a coiling machine having a suitable frame, the combination With amandrel; of a plurality of bending rollers disposed circumferentiallyaround the mandrel; and means for adjusting each roller bodily rotatablyabout an axis coinciding With a i radius ,from the mandrel, saidadjusting means including, a roll support and an oper` ating elementconnected to said roll support for moving the latter to adjust theroller about said axis.

3. In a coiling machine having a suitable frame, the combination With amandrel; of a plurality of bending rollers disposed circumferentiallyaround the mandrel; and means for adjusting each roller radially to-Ward and from and axially relatively to the mandrel and independentmeans for adjusting each roller bodily rotatably about an axiscoinciding With a radius from the mandrel.

4C. In a coiling machine having a suitable frame, the combination With amandrel; of a plurality of bending rollers disposed circumferentiallyaround the mandrel; means for adjusting each roller axially relativelyto the mandrel; means for bodily moving said adjusting` means and rollerradially of the mandrel; and mechanism for positively rotating each ofsaid rollers in a direction to advance the feed of the material beingcoiled.

5. In a coiling machine having a suitable frame, the combination With amandrel; of a plurality of bending rollers disposed circumferentiallyaround the mandrel; means for adjusting each roller bodily rotatablyabout an axis coinciding with a radius Ifrom, the mandrel, saidadjusting means including an oscillating lever; and mechanism` forpositively rotating each of said rollers in a direction to advance thefeed of the material being coiled.

6. In a coiling machine having a suitable frame, the combination With amandrel; of a plurality of bending rollers. disposed circumferentiallyaroundy the mandrel; means y for adjusting each roller radially towardand from and axially relatively to the mandrel and also bodily about anaxis coinciding with a radius from the mandrel, said means including abracket adjustable toward and from the mandrel, a slide mounted on saidbracket, said slide being adjustable lengthwise of the mandrel, and aroller support adjustably mounted on the slide; and mechanism forpositively rotating each of said rollers in a direction to advance thefeed of the material being coiled. j

7. In a coiling machine having a suitable frame, the combination With amandrel; of a plurality of bending rollers disposed cirf ferentiallyaround the mandrel; means for adjusting each roller bodily rotatablyabout an axis coinciding Wit-h a radius from the mandrel, said meansincluding a roller support rotatable on saidframe, and a rolle-r supportoperating element adjustable relative to said frame; and mechanism forpositively rotating said mandrel in a direction to advance the feed ofthe material being coiled.

8. In a coiling machine having a suitable frame, the combination With amandrel; of a plurality of bending rollers disposed circumferentiallyaround the mandrel; means for adjusting each roller radially `toward andfrom said mandrel; and means for adjusting each roller axiallyrelatively to the mandrel; and separate means for adjusting each rollerbodily rotatably about an axis coinciding With a radius from themandrel; and mechanism for positively rotating said mandrel in adirection to advance the feed of the material being coiled.

9. In a coiling machine having a suitable frame, the combination with amandrel; of a plurality of bending rollers disposed circumferentiallyaround the mandrel; means for adjusting each roller axially relativelyto the mandrel; mechanism for positively rotating each of said rollersin a direction to advance the feed of the material being coiled; saidmechanism including a gear carried by said adjusting means and mechanismfor positively rotating' the mandrel in a direction to advance the feedof the material being coiled.

lO. In a coiling machine having a suitable frame, the combination With amandrel; of a plurality of bending rollers disposed circumferentiallyaround the mandrel; means lau Llll for adjusting 'each roller bodilyrotatably about an axis vcoinciding With a radius from the mandrel;mechanism vfor positively rotating each of said rollers in a directionto vvadvance the Vfeed of the material being coiled; saidmechanism.including an element rotatable about said aXis and mechanismfor positively rotating kthe mandrel in a direction 'to advance the feedoi? the material being' coiled. y

11. Ina coiling machine having a suitable frame, the combination With amandrel; oi' a plurality of bending rollers disposed circumferentiallyaround the mandrel; means Vfor adjusting each roller radially toward andfrom and axially relatively to the mandrel and also bodily about an axisco-inciding AWith a radius from the mandrel, said means -including apair of slides movable lat yright angles to each other and a rollersupport rotatable on one of vsaid slides; mechanism 'for positivelyrotating each of said rollers yin a direction to advance the Eeed of thematerial being coiled and mechanism'forpositively rotating the mandrelin a "direction to advance the 'reed of the material lbeing coiled. f

'12. 'In a coiling machine having a suitable fraii'1e,"thecombinationwith a positively rotated mandrel; or' a pair of bending rollers.disposed circumferentially around the `mandrel; and means forpositively rotating each offsaid rollers, said means including, a gearrotatable in unison With the mandrel; a pair of brackets oscillatablyadjustable around the mandrel; a ypinion carried by each of saidbrackets andmeshing With said gear; and a train 'olii gearing Abetweeneach of said pinions and -each roller.

'18. vIn a `coiling machine of the character described, the combinationwith a mandrel: of a pair of grooved bending rollers disposedcircumferentially around the mandrel; and a guide block looselysupported by and between said rollers in the grooves thereof.

14. In a coiling machine ci' the character described, the combinationWith a mandrel; of two grooved rollers relatively closely adjacent anddisposed circumicrentially around the mandrel; and a guide blockconforming in shape substantially to the passage deiined by the adjacentportions ofthe grooves of said rollers, said block being supported byand between the rollers and hav ing at its inner end an arcuate groovesubstantially concentric with the mandrel.

15. In a coiling machine of the character described, the combinationWith a frame; of a mandrel; a pair of bending rollers disposedcircun'iferentially around the mandrel; and adjustable supporting meansfor each of said rollers, each of said means including a bracketslidable on the frame radially relatively toward and from the mandrel, aplate slidably adjustabh` mounted on said bracket in a directionparallel to the axis of the mandrel, and a spindle in Which the rolleris directly supported, said spindle being rotatably adjustablerelatively to said plate about an axis coinciding with a radius fromysaid mandrel.

In Witness that I claim the foregoing I have hereunto subscribed my namethis 14th day of Feb., 1921.

JOHN F. OCONNOR.

Vfitnesses CARRIE GAILING, UNA C. PEKIN.

